交换资料是获得情报源途径之一,它在情报资料工作中的作用已日益被显示出来。所谓交换资料,主要是非经出版部门正式出版或公开发行的、而由各情报资料单位刊印用以相互赠送的出版物。这些资料常常冠以“内部资料”、“内部交流”等字样,大致有以下几种情况:①不经邮局公开出版发行,②专供与建立交换关系的单位交流用,③资料不够成熟还不能正式出版,④只供本专业人员参考(大部分 The exchange of information is one of the ways to obtain information sources, and its role in intelligence information work is increasingly being demonstrated. The so-called exchange of information, mainly non-published by the publishing department formally published or public offering, and by the intelligence information units to print each other to give away publications. These materials are often dubbed “internal information”, “internal exchange” and other words, roughly the following situations: ① not published by the post office publishing, ② for the exchange and exchange of units to establish the exchange of relations, ③ information is not mature enough Officially published, ④ only for the professionals reference (most of them